OpenAI Codex CLI rust-v0.90.0

OpenAI Codex CLI rust-v0.90.0 was released on .

Summary

New Features - Added a network sandbox proxy with policy enforcement to better control outbound network access. (8442) - Introduced the first phase of connectors support via the app server and MCP ...

Release Context

  • This was the 11th OpenAI Codex CLI release of 2026 tracked by Havoptic.
  • It shipped 3 days after OpenAI Codex CLI rust-v0.89.0 (January 22, 2026).

Shipped around the same time

Within 3 days of this release, other AI coding tools also shipped:

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Release Notes

New Features - Added a network sandbox proxy with policy enforcement to better control outbound network access. (8442) - Introduced the first phase of connectors support via the app server and MCP integration, including new config/docs updates. (9667) - Shipped collaboration mode as beta in the TUI, with a clearer plan → execute handoff and simplified mode selection (Coding vs Plan). (9690, 9712, 9802, 9834) - Added ephemeral threads and improved collaboration tool provenance metadata for spawned threads. (9765, 9769) - WebSocket connections now support proxy configuration. (9719) - More strict limitation on multi-agents Bug Fixes - Fixed exec policy parsing for multiline quoted arguments. (9565) - --yolo now skips the git repository check instead of failing outside a repo. (9590) - Improved resume reliability by handling out-of-order events and prompting for the working directory when it differs. (9512, 9731) - Backspace no longer deletes a text element when the cursor is at the element’s left edge. (9630) - Config loading errors are clearer and more actionable across surfaces. (9746) - Default model selection now respects filtered presets to avoid invalid defaults. (9782) Documentation - Corrected a typo in the experimental collaboration prompt template. (9716) - Added documentation for the new connectors configuration surface. (9667) Chores - Refreshed the bundled model catalog/presets. (9726) - Updated GitHub Actions for Node 24 compatibility. (9722) Changelog Full Changelog: https://github.com/openai/codex/compare/rust-v0.89.0...rust-v0.90.0 - 9715 feat: fix formatting of codex features list @bolinfest - 9716 Fix typo in experimentalprompt.md @iudizm - 9719 feat: support proxy for ws connection @apanasenko-oai - 9712 TUI: prompt to implement plan and switch to Execute @charley-oai - 9713 use machine scope instead of user scope for dpapi. @iceweasel-oai - 9726 Update models.json @github-actions - 9667 [connectors] Support connectors part 1 - App server & MCP @mzeng-openai - 9674 feat(app-server) Expose personality @dylan-hurd-oai - 9733 Change the prompt for planning and reasoning effort @aibrahim-oai - 9730 Hide mode cycle hint while a task is running @charley-oai - 9720 feat: add session source as otel metadata tag @alexsong-oai - 9565 Fix execpolicy parsing for multiline quoted args @jdsalasca - 9745 chore: use some raw strings to reduce quoting @bolinfest - 9753 nit: exclude PWD for rc sourcing @jif-oai - 9690 feat: tui beta for collab @jif-oai - 9116 Persist text element ranges and attached images across history/resume @charley-oai - 9777 plan mode prompt change @aibrahim-oai - 9590 fix(exec): skip git repo check when --yolo flag is used @zerone0x - 9722 Upgrade GitHub Actions for Node 24 compatibility @salmanmkc - 9611 Print warning if we skip config loading @gt-oai - 9782 Select default model from filtered presets @aibrahim-oai - 9512 Fix resume picker when user event appears after head @jdsalasca - 9787 Remove stale TODO comment from defs.bzl @jcoens-openai - 9700 still load skills @gt-oai - 9791 Load untrusted rules @gt-oai - 9707 bundle sandbox helper binaries in main zip, for winget. @iceweasel-oai - 9792 Chore: remove mode from header @aibrahim-oai - 9793 change collaboration mode to struct @aibrahim-oai - 8442 feat: introducing a network sandbox proxy @viyatb-oai - 9802 Have a coding mode and only show coding and plan @aibrahim-oai - 9746 Another round of improvements for config error messages @etraut-openai - 9812 Remove batman reference from experimental prompt @charley-oai - 9769 feat: add thread spawn source for collab tools @jif-oai - 9765 feat: ephemeral threads @jif-oai - 9819 fix: libcc link @jif-oai - 9820 fix: musl build @jif-oai - 9316 fix(windows-sandbox): remove request files after read @MaxMiksa - 9630 Prevent backspace from removing a text element when the cursor is at the element’s left edge @charley-oai - 9840 Revert "fix: musl build" @aibrahim-oai - 9778 Raise welcome animation breakpoint to 37 rows @mzeng-openai - 9731 Ask for cwd choice when resuming session from different cwd @charley-oai - 9841 Revert "fix: libcc link" @aibrahim-oai - 9806 Use collaboration mode masks without mutating base settings @aibrahim-oai - 9834 Mark collab as beta @pakrym-oai - 9847 Revert "Revert "fix: musl build"" @jif-oai - 9855 feat: cap number of agents @jif-oai

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